Sign into an existing account

I've tried two browsers and my phone with no luck. I assume it's either down on their end (I'd expect it to be fixed by now) or it's being blocked somehow because it has memes that aren't kike approved.

The error looks like this, but it's for catbox obviously.
https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/gallery/images/2018-06-22-05-51-46-a35712.png

Any help would be appreciated.

Edit: I fixed it. Not exactly sure how, but I think it may be because I copy pasted files.catbox.moe into my address bar (this take you to catbox's home page), and I was given a warning that it maybe an unsafe site. I clicked take me in anyway and it now works for all links I've tried.

This was a complete accident.

Edit 2: Not completely fixed. Seems every time I close my browser or have all catbox links closed for a while the problem returns. If I copy paste files.catbox.moe to my address bar and leave that homepage window open I can then load whatever catbox links I like. There hasn't been any warning or confirmation page since the first time.

All this is very strange.